Answers: 3
Biology, 21.06.2019 18:30
The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.
Answers: 3
Biology, 22.06.2019 10:50
Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive
Answers: 2
Biology, 22.06.2019 14:30
Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals
Answers: 3
Biology, 22.06.2019 14:50
This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.
Answers: 1
What are plastids?name their types....
Mathematics, 04.09.2020 02:01
Mathematics, 04.09.2020 02:01
Biology, 04.09.2020 02:01
Mathematics, 04.09.2020 02:01
Mathematics, 04.09.2020 02:01
Biology, 04.09.2020 02:01
Mathematics, 04.09.2020 02:01